Many people love radishes and grow them in their backyards. This savory vegetable was loved by its specific taste and fertility.
Gardeners know that radish crops can be harvested several times per season. If you do not pay proper attention to planting, they will be subject to systematic attacks of pests.
If plants are already affected, it is important to know the characteristic symptoms, identify the problem in a timely manner, and understand how to deal with it.
Radish danger
By attacking a plant, pests can destroy the entire crop in just a few days.
The defeat of the tops is especially dangerous - the growth of the root crop stops and the plant dies.
How to determine exactly what hit the root crop - a disease or insects?
If the plant overcomes the disease, it changes its physiological state. Symptoms of various diseases can be:
- the appearance of white oil deposits on stems, leaves, pedicels and testicles;
- spherical growths on root vegetables, which eventually acquire a brown hue and begin to rot;
- black, light yellow or brown spots on radish leaves;
- root crops become covered with brown spots and overgrow with gray down;
- the veins on the leaves or the base of the stem turn black, the leaves turn yellow and begin to fall off.
Pathogens with such manifestations are fungi and viruses.
When attacking a pest culture is usually mechanically damaged. - ulcers and holes in the leaves, holes in the roots. Also, almost always, it is possible to detect the presence of the parasitic insects themselves on any part of the plant.
Harmful insects - description, photo and methods of dealing with them
Further on the photo you can see how some plant eaters look like.
Cruciflo flea
Black bugs moving along the bed of intense jumps, making them easy to spot. The pest infects the leaves of the radish, gnawing fragments and rapidly increasing the affected area. The attacked radish stops growing and dries out.
Especially active cruciferous flea in dry hot weather.
How to deal with a pest than to treat a flea radish, are there any folk remedies against this insect?
To protect the planting from the attack of a flea, you can resort to natural remedies. For the manufacture of the protective composition will be required in equal proportions:
- Ash.
- Tobacco dust.
- Mix the components and sprinkle the resulting composition over the bed once every five to seven days.
With mass destruction and the inevitable need for the use of chemicals use drugs Tod, Alfatsin, Zolon, Kaiser, Arrivo.
The plant is processed according to the instructions. For example, Zolon, a preparation in the form of an emulsion concentrate, is used as follows:
- Spraying is carried out during the growing season.
- The composition is diluted in a ratio of 1.6 ml to 2 liters of water. The resulting solution is enough to handle about three square meters.
- To carry out processing in the morning or in the evening in windless, dry weather.
- The duration of the drug - 15-20 days, pests by 90% die on the third day after spraying.
Whitefish
White butterfly laying its larvae in the soil. Emerging caterpillars move to the leaves and destroy them. For the disinfection of plants need to prepare the composition of the following components:
- Mustard - 2 tablespoons.
- Ground black pepper - 1 tsp.
- Table salt - 2 tablespoons.
- Water - 10 liters.
- All components mix and sprinkle radish once a week.
Cabbage Mole
The moth is a gray-brown color, measuring about two centimeters. Insect larvae can be found on the bottom of the leaves.. The hatched caterpillars feed on the foliage of the radish.
To counter the pest you need to feed the planting superphosphate with calcium chloride.
If a massive destruction of plants has occurred, then for the destruction of pests one will have to resort to chemical treatment with Lepidocide and Bitoxibacillin, remembering that it is forbidden to conduct such treatments during fruit ripening.
Lepidocide application:
- The drug is prepared on the day of use, according to the instructions.
- To prepare the solution, only clean, warm water is used.
- Spraying is carried out in dry weather up to +35 degrees.
Cabbage Fly
This gray-brown fly is not dangerous for a radish, unlike its larvae. They deform the root, gnawing holes in it. Also caterpillars are able to completely destroy the fresh leaves.
Insect does not tolerate naphthalene-based substances., hydrated lime and camphor. It is possible to carry out the treatment of plants with compositions that include one of the listed components.
If the lesion exceeds 15%, Lepidocide and Bitoxibacillin are used.
Garden scoop
Butterfly brown color, the larvae which eat the shoots. As a result of such a lesion, the greens can grow, and the fruit does not develop, and so remains a root.
To destroy the pest, you can use the following recipe:
- 500 grams of dried tops.
- 50 grams of rubbed soap.
- 10 liters of water.
- Insist the botany in water in a warm place for four hours.
- Before spraying add soap.
- Handle landing in the evening in dry weather.
If a tool from natural ingredients did not work, you need to use chemical means. Zeta-cypermethrin, IntaVir has proven itself well.
Cabbage Butterfly
The butterfly is white, the caterpillars of which feed on young leaves and eat away the flesh, leaving only the veins.
You can overcome the pests by collecting them manually and processed planting coniferous concentrate. For this you will need:
- Spruce or pine twigs and cones - 200 grams.
- Hot water - 2 liters.
- Fold the raw material into an enameled container, pour water on it, leave it at room temperature for a week.
- After a fixed time, strain the tool.
- Dilute one part concentrate to ten parts water.
- Spray in the morning every two weeks.
If there is a need for chemical treatment, Fitoverm, Bitoxibacillin and Lepidocid will work well.
Wireworm
Small, brown bugs with oblong calves. Destroy the tender shoots. Adults feed on foliage, and larvae feed on roots. On plants attacked with wireworm, rot and various fungal diseases can develop. Radish rot from the inside.
A good option for escape from the wireworm is to dig in the onion peel in the garden when planting radishes.
At the first symptoms of a lesion, fertilization based on ammonium sulphate may help.
If the plant is attacked en masse, use the drug Basudin. To destroy the wireworm, it is introduced into each well, with a dosage of 1 gram per square meter.
Stem Nematode
These are filamentous microscopic transparent whitish worms, up to 2 mm long. Their goal is radish juice, they can nest in the root of the fetus, the roots or the stem. Damaged radishes wither and die.
Against nematodes are effective marigolds:
- The plant is completely dried in the open air.
- Half a bucket of crushed marigolds is poured with ten liters of water and drawn for three days.
- In the resulting composition, add 50 grams of soap, filter the solution.
- Spray the plant must be weekly.
Insecticides are used to fight nematodes: Dimethoat, Rogor, Vidat. The use of these preparations makes sense only for young shoots.
Rape Sawfly
Insect, about 8 mm long, yellow-orange in color with two black spots on the back. The shiny body with two pairs of transparent wings, yellow at the base and with a black border at the edges.Rape Sawfly female lays eggs in the second half of May - early June on the lower side of a sheet of radish. Hatching caterpillars eat away numerous holes in the leaves and lead the plant to death.
In the fight against pest will help the infusion of the black henbane. It is necessary to take:
- 500 grams of dry leaves.
- 2 liters of water.
- Insist 12 hours.
- Strain the liquid through a sieve.
- Dilute the resulting composition with eight liters of water, add grated soap and treat the beds.
Of the chemical drugs are effective Dendrobatsillin, entobakterin.
Entobacterin is dissolved in warm water, adhering to the dosage of 10 g per liter of water. Processing is carried out using a spray.
Cruciferous bug
Small black bugs with bright orange stripes feed on radish juice and young shoots dry out. To protect the planting from pests, you can prepare the following solution:
- 500 grams of leaves dope ordinary.
- 10 liters of water.
- 2-3 tablespoons chopped soap.
- Mix components and infuse for 12 hours.
- Spray the tops every five days.
When chemical processing using Phosbecid, Actellik. Preparations are used according to the instructions.
Summer Cabbage Fly
Worm fruits of radish - the result of life of the summer cabbage fly. Malicious insect larvae are difficult to detect - they are whitish, up to 8 mm in length. Destroys the inner part of the stalks, makes moves and moves to the fruit.
Folk remedy in the fight against this insect includes:
- Salt - 200 grams.
- Ten liters of water.
Salt is diluted with water and irrigated beds. After the earth should be sprinkled with ashes.
Effective insecticides in the fight against summer cabbage fly - Karbofos, Zemlin, Rovikurt.
Prevention
For pests the most attractive weakened shootstherefore, the timely introduction of supplements that strengthen the immune system reduces the risk of disease and parasites.
The following procedures can also be used to prevent the appearance of pests:
- to spray in beds of radish taken in equal proportions wood ash, slaked lime and tobacco dust;
- spray radish decoction of green wormwood;
- spray only the emerged seedlings with a solution of vinegar, prepared at the rate of 1 cup of 9% vinegar per ten liters of water.
To prevent the invasion of pests will also help competent selection of crops, neighbors for radish. Essential compounds found in potatoes, cumin, dill and tomatoes can scare off parasites. Also suitable for decontamination marigolds, nasturtium, mustard and fennel.
At the end of the season you need to clean the plant residues., since it is in them that part of the pests overwinter. Closer to the frost, the ground in the garden must be dug up so that the larvae and adult insects die.
Proper control of the crop, prevention of the appearance of pests and, if necessary, timely measures taken to destroy, will help the gardener to win the fight for a rich harvest of radish.
